Fix example code importing from wrong package (#50)

Co-authored-by: Thomas Honeyman <[email protected]>

Author: flip111

CHANGELOG.md

@@ -11,6 +11,7 @@ New features:
 Bugfixes:
 
 Other improvements:
+* Fixed readme bug where `jsonParser` was imported from `Data.Argonaut.Core` instead of `Data.Argonaut.Parser` (#50 by @flip111)
 
 ## [v6.0.0](https://github.com/purescript-contrib/purescript-argonaut-core/releases/tag/v6.0.0) - 2021-02-26
 

README.md

@@ -68,7 +68,7 @@ someObject =
 Finally, you can parse JSON from a string using the `jsonParser` function. However, this isn't guaranteed to produce a correct value, so it returns an `Either` value, where a parsing error is represented with `Left` containing an error message.
 
 ```purs
-import Data.Argonaut.Core (jsonParser)
+import Data.Argonaut.Parser (jsonParser)
 import Data.Maybe (Maybe(..))
 
 someObject :: Either String Json